1. Junior Member
Join Date
Feb 2009
Location
jupiter,florida
Posts
20

## load to much for gfci

Hello,I have two separate loads,feeding (temporaliy),from one gfci feed.20a..there is 250ft of 14/2,,and a few outdoor lights. 800w of lights.The second load is 150ft,14/2 and 300w of lights. When I plug both in,I trip the gfci,not the breaker,,I have a CLAMP METER,can I go on a hot wire for each individual load,when on,and try to determine the amp draw??thanks,each of these loads work OK by themselves.

2. ## Re: load to much for gfci

800 W plus 300 W equals 1100 W divided by 120 volts = 9.17 amps no where near 20 amps. GFCI are tripped by a difference in current flow between the "hot" and "neutral" not by excessive current. The breaker didn't trip so you are not drawing more than 20 amps. DO NOT "hot wire" , find the cause.
Jack

3. Junior Member
Join Date
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Location
jupiter,florida
Posts
20

## Re: load to much for gfci

U are right,I will find the cause or run new leg.My 2nd question,for a little education, is with the clamp meter..can I go on one leg(hot),at any point on the wiring and test the amp draw??when the load is lighting?thanks

4. Member Rank 1
Join Date
Aug 2008
Posts
109

## Re: load to much for gfci

Originally Posted by schlo
Hello,I have two separate loads,feeding (temporaliy),from one gfci feed.20a..there is 250ft of 14/2,,and a few outdoor lights. 800w of lights.The second load is 150ft,14/2 and 300w of lights. When I plug both in,I trip the gfci,not the breaker,,I have a CLAMP METER,can I go on a hot wire for each individual load,when on,and try to determine the amp draw??thanks,each of these loads work OK by themselves.
14/2 should be protected by 15 amp max, for long distances may have to increase size.

Sensors on these outdoor lights (motion/light levels) timers? Power supplies/transformers?

Suspect a wiring error or fault. Water infiltration, condensation, continuity, poor bond to ground all possibilities.

Voltage drop issues also possible.

5. ## Re: load to much for gfci

Originally Posted by schlo
U are right,I will find the cause or run new leg.My 2nd question,for a little education, is with the clamp meter..can I go on one leg(hot),at any point on the wiring and test the amp draw??when the load is lighting?thanks
Yes you just need to make sure you seperate the legs.
Jack

6. ## Re: load to much for gfci

Originally Posted by Gray Watson
14/2 should be protected by 15 amp max, for long distances may have to increase size.

Sensors on these outdoor lights (motion/light levels) timers? Power supplies/transformers?

Suspect a wiring error or fault. Water infiltration, condensation, continuity, poor bond to ground all possibilities.

Voltage drop issues also possible.
Because this is a plugged in circuit it is not necessary to have 15 amp protection, however the rest of your post is valid.
Jack

7. Member Rank 1
Join Date
Aug 2008
Posts
109

## Re: load to much for gfci

Originally Posted by JLMCDANIEL
Because this is a plugged in circuit it is not necessary to have 15 amp protection, however the rest of your post is valid.
Jack
I didn't see where he said that. Figured a deadfront GFCI with two loops one 250 ft out the other 100 ft out on 14/2. Either way 14/2 shouldn't be part of a 20 amp circuit.

Unless you're saying he's throwing a cap on 14/2 and plugging it into a GFCI receptacle on one end and wiring the other end to a receptacle in a box? (which would be very bad)
Last edited by Gray Watson; 03-07-2009 at 05:40 PM.

8. ## Re: load to much for gfci

In the OP he said "When I plug both in" .
Jack

9. Member Rank 1
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Posts
109

## Re: load to much for gfci

True but also said temporary and also mentioned the new leg, so I'd call that a leap in logic.

Rather depend on the author to indicate the meaning since not clear at all that was refering to a cord cap.

I suspect this is a continued effort on this other discussion about tripping GFCI, pool and yard lighting:

14 awg doesn't belong on a 20 amp circuit.

If this is the same project Schlo needs qualified on-site help. You must have EGC near pool.

Bonding pool area essential.

A Pro can check service bond and check for stray voltage from drop, pole and transformer locations.
Last edited by Gray Watson; 03-07-2009 at 05:49 PM.

10. ## Re: load to much for gfci

Does that mean I can't plug the 14 awg extension cord for the hedge clippers into the 20 amp outside outlet I have, or that I should unplug all the table lamps with 18 awg cords that are pluged into outlets on a 20amp circuit?
Jack

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