Shop By Bulb Type

What is Ballast Compatibility?

TYPE A DUAL-END

Electric Ballast Compatible

Dual-End Type A installation is “Plug and Play” and simply replaces the original fluorescent tube with an LED equivalent, requiring the use of the original ballast. This is the easiest solution to relamping your fixture if you have already determined your ballast is functioning properly.

How To Wire:
SHOP TYPE A DUAL-END

TYPE B SINGLE-END

Ballast Bypass (Single-End Wiring)

Single-End Type B installation requires bypassing the original ballast and rewiring sockets (tombstones) in the fixture. This is a popular solution when relamping, due to the likelihood of an eventual ballast failure.

How To Wire:
SHOP TYPE B SINGLE-END

TYPE B DUAL-END

Ballast Bypass (Dual-End Wiring)

Dual-End Type B installation simply involves bypassing the existing ballast and installing the tube with polarity matching the wiring. This is the most common retrofit solution when bypassing the ballast.

How To Wire:
SHOP TYPE B DUAL-END

TYPE A/B HYBRID

Ballast Compatible and Ballast Bypass (Single-End Wiring)

This can be installed in the same manner as a Dual-End Type A (“Plug and Play” tube simply replaces the original fluorescent tube) or a Single-End Type B (requires bypassing the original ballast and rewiring sockets).

How To Wire:
OR
SHOP TYPE A/B HYBRID

TYPE A/B 3-IN-1 UNIVERSAL

Ballast Compatible and Ballast Bypass (Single and Dual End Wiring)

This is the most universal tube lamp solution. “Plug and Play” install if using the existing ballast, or bypass the ballast and install in the same manner as Single-End or Dual-End Type B.

How To Wire:
OR
OR
SHOP TYPE A/B 3-IN-1 UNIVERSAL

Have Questions?

Contact one of our LED lighting experts

866-590-3533

Live ChatChat (offline)  

Email Us Anytime

Customer Support Hours

Mon-Thurs: 8:30 a.m. to 4:00 p.m. CDT

Fri: 8:30 a.m. to 4 p.m. CDT

Connection Types

SINGLE-END WIRING

  • Electrically connected from one end of the tube, one pin connecting to line and one to neutral
  • This type requires non-shunted sockets and rewiring

DUAL-END WIRING

  • Electrically connected on both ends of the tube, with one end connecting to line and one to neutral.
  • This type can use shunted or non-shunted sockets. As with the original bulbs these are replacing, one end of the tube connects to L and the opposite end to N—one end should not be connected to both.

Determining Shunted or Non-Shunted

Below are some typical examples of how shunted or non-shunted sockets might look. This is only a general reference. You should always check the socket terminals with a multimeter before installing bulbs or rewiring. If the two sides of a socket have continuity, then the socket is shunted regardless of appearance.

SHUNTED

Both contacts in the same socket (tombstone) are connected/bridged and are the same polarity—either L or N.

INTERNALLY SHUNTED SOCKET

EXTERNALLY SHUNTED SOCKET

(WITH JUMPER WIRE)

NON-SHUNTED

Contacts in the same socket (tombstone) are split, but can be either the same polarity or opposing polarity depending on the way the socket (tombstone) is wired.

TYPICAL NON-SHUNTED SOCKET

Send us your Feedback