LED retronfit

arnettda

Senior Member
Can someone point me towards other posts or articles or give me your advice when switching from T-8 lamp to LED lamps and keeping the ballast or completely getting rid of it? By pass versus non bypass lamps I believe would be the correct terms. Thank you
 

LarryFine

Master Electrician Electric Contractor Richmond VA
I strongly believe that the bypass, direct-wire type is the only way to go. Why pay to keep the ballasts warm? It's similar to people who replace automotive turn-signal bulbs with LEDs, and then add load resistors to load the existing thermal flasher, instead of installing an LED-compatible one. Why waste the energy you're trying to save?

I recently had a few customer-supplied LED tubes burn out, along with a ballast or two, when mixed types were tried in various combinations. There was no warning on the tubes about mixing, and the customer did the un-boxing before we were called. We ended up installing new ballasts and fluorescent tubes, at his request, and cost.
 

arnettda

Senior Member
I strongly believe that the bypass, direct-wire type is the only way to go. Why pay to keep the ballasts warm? It's similar to people who replace automotive turn-signal bulbs with LEDs, and then add load resistors to load the existing thermal flasher, instead of installing an LED-compatible one. Why waste the energy you're trying to save?

I recently had a few customer-supplied LED tubes burn out, along with a ballast or two, when mixed types were tried in various combinations. There was no warning on the tubes about mixing, and the customer did the un-boxing before we were called. We ended up installing new ballasts and fluorescent tubes, at his request, and cost.
I agree as well but my one supplier says they sell a lot of them so I am looking for reasons to support that. My other supplier only sells LED lamps that are direct wired.
 

MAC702

Senior Member
Location
Clark County, NV
I do bypass lamps to actually get the benefits of LED lighting, not just the appearance of it.

Don't forget that you probably need to change the tombstones to a non-shunted type if the tubes have hot-and-neutral pins on the same side.
 

ActionDave

Moderator
Staff member
Location
Durango, CO, 10 h 20 min without traffic from wing
Occupation
wire pulling grunt
I do bypass lamps to actually get the benefits of LED lighting, not just the appearance of it.

Don't forget that you probably need to change the tombstones to a non-shunted type if the tubes have hot-and-neutral pins on the same side.
Pretty easy to find LED self ballasted replacement tubes that work with shunted or non shunted tombstones.
 

Little Bill

Moderator
Staff member
Location
Tennessee NEC:2017
Occupation
Electrician
I use the type that is either/or. You can wire them same end or end to end. I prefer them as sometimes I have to wire the sockets different so I don't have to add or replace wires. But I always use the by-pass type tube.
 
I will only install ballast bypass type lamps. I don't want a warranty call that a light is out b/c the ballast failed. Alot of shady electricians/lighitng companies/escos/utilities will install direct fit lamps to make a quick buck, then they will get the recurring maintenance calls down the road to make more money.
 
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