Crews from Tiverton, Cullompton and South Molton were called out to the property in Bickleigh just before 3am.
Overhead power cables nearby have been disconnected.
Crews on scene used compressed air foam covering jet on the barn.
Mid Devon barn fire destroys 300 bales of hay.
More from Local News
-
Directly elected mayor referendum in Plymouth
Political parties and mayor campaign have their say
-
Pension changes could hit public sector workers
Devon Pension Fund could go into 'megafund'
-
Saved! BT phone box at Compton
The pips were just about to go
-
Barnstaple woman pulls out own teeth
She saves £3,000
-
Bird house destroyed in Exmouth fire
Blaze in garden of house
-
Exeter man wanted for recall to prison
Stevie Palmer, 31, shouldn't be approached
