FBE employed around 50 staff and turned over more than £4m last year on projects from domestic rewires to big commercial schemes.
The firm’s biggest current order was £1.5m for electrical work at Southmead Hospital in Bristol for Carillion.
It was also working for Laing O’Rourke on the Abercrombie building extension of a teaching block at Oxford Brookes University.
Other jobs included the Leeds Trinity Shopping complex and a data centre in London.
Meanwhile, a further 20 workers have been made redundant following the collapse of Somerset plumbing, heating and air conditioning installation firm JRC Mechanical Services.
JRC, which was based in Ashill, traded for 20 years and supplied services in schools and police stations.
The firm suffered a declining order book and reducing margins, which were compounded by the insolvency in 2010 of Rok, as well as customers not paying to terms.
Graham Bushby and Matthew Wild, of Baker TIlly Restructuring and Recovery said: “The company recently exhausted its cash resources and in the absence of additional funds, has been unable to finance its new contracts.
“Consequently, the directors had no option but to appoint administrators to protect the assets for the benefit of creditors.”