Search found 53 matches

by Crowbar
Tue Nov 29, 2005 2:38 pm
Forum: General Discussion
Topic: 3000 watt inverter
Replies: 6
Views: 3532

Re: 3000 watt inverter

I don't see how an 8AWG wire will limit current. The 2002 NEC lists the DC resistance at .76 to .8 ohms per kfoot. That would make 25 feet a resistor of about 0.00924 ohms. At 27 amps that would only be a voltage drop of 0.24948 in the wire.
by Crowbar
Mon Nov 21, 2005 2:49 pm
Forum: General Discussion
Topic: Looking for a data sheet for old RCA chip
Replies: 11
Views: 5089

Re: Looking for a data sheet for old RCA chip

I've found this site to be useful at times.

http://www.relic-servis.com/linkovi/Search.html
by Crowbar
Thu Nov 03, 2005 2:09 pm
Forum: General Discussion
Topic: GFCI installation on a two wire system?
Replies: 8
Views: 4508

Re: GFCI installation on a two wire system?

2002 NEC sec 406.3(D)(3)(b): A nongrounding-type receptacle(s) shall be permitted to be replaced with a ground-fault circuit interupter-type of receptacle(s). These receptacles shall be marked "No Equipment Ground". An equipment grounding conductor shall not be connected from the ground-fa...
by Crowbar
Thu Nov 03, 2005 1:54 pm
Forum: General Discussion
Topic: GE Motor wireing
Replies: 3
Views: 2374

Re: GE Motor wireing

Glad to help.
by Crowbar
Wed Nov 02, 2005 12:57 pm
Forum: General Discussion
Topic: GE Motor wireing
Replies: 3
Views: 2374

Re: GE Motor wireing

I'd imagine this is a single phase motor, if there are markings on the leads like T(insert number here) then for low voltage (110): T1 & T5 & T3 = Line 1 T2 & T4 & T8 = Line 2 for high voltage (220) T1 = Line 1 T2 & T3 & T5 = Connect together T4 & T8 = Line 2 These are NE...
by Crowbar
Mon Oct 10, 2005 4:34 pm
Forum: General Discussion
Topic: Converting electric motor from 110 to 220
Replies: 3
Views: 2126

Re: Converting electric motor from 110 to 220

Open up the terminal box, and see if your leads are marked. If leads are marked T1,T2,T3,T4,T5,T8 it should be a NEMA motor,
then connect:
L1 - T1(P1 if thermal protected)
L2 - T4,T5(T8)
Join T2,T3,T8(T5)<p>T5 & T8 are the start windings and are swapped to change direction.
by Crowbar
Fri Sep 23, 2005 6:18 pm
Forum: General Discussion
Topic: GFCI
Replies: 5
Views: 2987

Re: GFCI

Off topic sorry, but glad to see I'm not the only one who noticed the error...<p>'Which brings up a couple of technical mistakes they made in one episode of the TV show "CSI". A man was electrocuted because the perpetrator had allegedly disabled a GFCI circuit by cutting off the ground ter...
by Crowbar
Wed May 25, 2005 4:40 pm
Forum: General Discussion
Topic: bandsaw blade welder (old one)
Replies: 26
Views: 12867

Re: bandsaw blade welder (old one)

I might be able to find one, we have an old Peerless bandsaw with a Strycho welder on it, I'll have to see if we still have the schematic for it. I've fixed it a bunch of times but never needed the schematic, its biggest problem was the motor bushings were worn.
by Crowbar
Tue May 03, 2005 5:16 pm
Forum: General Discussion
Topic: Relay ladder logic program
Replies: 7
Views: 4099

Re: Relay ladder logic program

I forget the name of the company now but you should be able to web search "The Constructor" It allows you to design and test ladder logic, I had a free demo version years ago and it wasn't too shabby then. I've heard its only gotten better.
by Crowbar
Mon Jan 31, 2005 1:13 pm
Forum: General Discussion
Topic: surging GM alternators
Replies: 20
Views: 7895

Re: surging GM alternators

//You might want to check to see if there is an absolutely, positively 100% solid ground connection between the engine/alternator frame and the chassis. And I don't mean with a ohm-meter. I mean by measuring the voltage between the alternator frame and the chassis of the vehicle while it's running a...
by Crowbar
Tue May 04, 2004 6:49 am
Forum: General Discussion
Topic: 100w bulb in 40w max desk lamp
Replies: 13
Views: 7207

Re: 100w bulb in 40w max desk lamp

"99% of houses have the overhead lights on a dedicated circuit...rarely ever mixed with any outletts "<p>Speaking as an Electrician, most houses I have come accross have the lights and receptacles on the same circuit, often between adjoining rooms. $$ is the name of the game in new constru...
by Crowbar
Thu Feb 26, 2004 5:40 pm
Forum: General Discussion
Topic: Automotive dual battery question
Replies: 29
Views: 11461

Re: Automotive dual battery question

I may be off base by not noticing, however I didn't notice anyone make mention that the current rating of a conductor is based on the highest temperature its insulation can withstand. The starting period is short enough that the cable's insulation would be able to withstand a substantial overload. T...
by Crowbar
Fri Feb 20, 2004 3:47 am
Forum: General Discussion
Topic: Amps or watts?
Replies: 13
Views: 5520

Re: Amps or watts?

The voltage rating is there to indicate the resulting arc that the fuse can safely interrupt. The higher the voltage the longer the fuse. Amps are amps no matter the voltage and its AMPS that blow fuses, else they would be rated in watts. More information on fuses can be found at www.bussmann.com/ <...
by Crowbar
Fri Jan 30, 2004 1:46 pm
Forum: General Discussion
Topic: generator head variable load
Replies: 12
Views: 5708

Re: generator head variable load

I initially thought of a variac connected to a surplus mill-type resistor, however that would be a huge resistor and variac to handle the full rated load of the generator. What is the input horsepower rating of the generator and how much do you want to load it? If your driving engine is small enough...
by Crowbar
Wed Sep 10, 2003 10:52 am
Forum: General Discussion
Topic: Variable frequency drive
Replies: 9
Views: 4921

Re: Variable frequency drive

www.eng-tips.com/viewthread.cfm?SQID=23 ... 237&page=2
Try this link for more infomation on controlling single phase motors with VFDs.