to piggy or not

[LarryFine]

While I acknowlege the rules (Hell, sometimes, I even obey them! ), to me, multiple EGC's in one bus hole are no worse than several EGC's spliced together, with only one equal to the largest actually landed on the EGC terminal.

I have, on several occasions, twisted two or three EGC's of the same size and landed them in one hole, but only in a real pinch. Having said that, I do insist on one neutral per hole. Safety, function, and performance come first.

 

[solaeros]

If you planned all along to use tandems, maybe so. You kinda got blindsided, so your pre-planning in using a 30/40 panel paid off. This is among the reasons why you plan with a little wiggle room, in case things like this crop up. Don't sweat it.

(All that electric heat, though... how's your demand load calc look now?)

Based off 220.82 c (6) I would only have about 7000 watts from the original 1.7 kva of heater load so I should be fine that way.
Thanks a-bunch for your insight guys.

 

[allenwayne]

While I acknowlege the rules (Hell, sometimes, I even obey them! ), to me, multiple EGC's in one bus hole are no worse than several EGC's spliced together, with only one equal to the largest actually landed on the EGC terminal.

I have, on several occasions, twisted two or three EGC's of the same size and landed them in one hole, but only in a real pinch. Having said that, I do insist on one neutral per hole. Safety, function, and performance come first.

Larry many manufacturers ground bars are rated for more than one grounding conductor under a single lug.Usually they are permitted as long as the conductors are of the same gauge and not larger than a #10.CH panels are rated for up to 3 conductors with those restrictions.At least they were when an inspector tagged a job and we contacted CH for the rating of the ground bar.

When I cut in a panel especially when I know it is loaded I always seperate my grounds and pair them up and twist them before landing them,Just makes a more astecially pleasing panel IMO.But then again I always leave 2 spaces in case a sub panel needs to be added down the road.So a panel will always have 2 full sized spaces available,if not change order time for a sub panel.Never been questioned on this ever.